One reason why I've been writing up arxiv preprints rather than published articles in PRL/APL/Science/Nature is that the APS Virtual Journals do a very good job of aggregating articles from those sources. The Virtual Journal of Nanoscale Science and Technology in particular is one of my favorite places to look for nano-themed condensed matter work. One unfortunate flaw of the virtual journals, however, is that they do not have a nice agreement in place to let them include links to articles published in ACS journals. That's really too bad, since an awful lot of very neat results have been showing up there, particularly in Nano Letters, and I suspect that the new longer-paper ACS Nano is going to be of similar high quality. So, I'm going to try pointing out a couple of JACS/Nano Lett/ACS Nano articles that catch my eye every week or two.